Paving-block.



J. A. GOGSWELL.

PAVING BLOCK. APPLICATION FILED MAY 25, 1912.

Patented July 29, 1913.

e g a winesses Inventory Z K M W JAMES A. COGSWELL, 0F BOSTON, MASSACHUSETTS.

PAVING-BLOCK.

Specification of Letters Patent.

Patented July 29, 1913.

Application filed May 25, 1912. Serial No. 699,615.

To all whom it may concern:

Be it known that I, JAMEs'A. COGSWELL, a citizen of the United States, residing at Boston, in the county of Suifolk and State of Massachusetts, have invented an Improveinent in Paving-Blocks, of which the following is a specification.

This application is a continuation of my application #595,548, filed December 5, 1910. a

This invention relates to paving-blocks, and has for its object to provide a wooden paving block with an improved form of metallic plate or grid adapted to be inserted in a recess in the block and to be securely held in said recess.

Figure 1 is a perspective view of several paving blocks embodying this invention, ar-

ranged to form a street paving. Fig. 2 is a vertical section of the block taken on the dotted line 2-2, Fig. 3. Fig. 3 is a side elevation of the block. Fig. 4; is a side elevation of the block, illustrating one method of driving in the metallic plate. Fig. 5 is a vertical, longitudinalsection of the block, showing the securing means for the plate. Fig. 6 is an end view of a block with a modified form of metallic plate. Fig. 7 is a side view of the block shown in Fig. 6, showing the method of driving in the metallic plate. Fig. 8 is a side view of another modified form of plate, Fig. 9 is a vertical section of the plate shown in Fig. 8, taken on the dotted line 99. Fig. 10 is a side view of another modified form of plate. Fig. 11 is a vertical section of the plate shown in Fig. 10, taken on the dotted line 1010. Fig. 12 is an end view of a plate similar to Fig. 10, having a projection on one side only.

(6 represents a block, which is made of wood and of any usual or suitable shape and dimensions. It may be treated with a preservation, if desired. It has a saw cut or kerf a in its upper side or face extended from end to endof it and usually arranged intermediate its width.

6 represents a plate of iron, steel or other suitable metal. It is made of a thickness corresponding to the width of the saw cut or kerf in the block, so that it may be driven into said kerf, and is made of a length corresponding to the length of the block or thereabout, and is made of a width slightly greater than the depth of the kerf, so that when driven thereinto and bottoming therein it will project slightly beyond the face of the 'block. For the purpose of holding said metallic plate in the kerf in the block it is provided with one or more spurs or proections arranged on one or both sides of it, which have groove-forming portions whereby they are adapted to cut their way into the side wall of the kerf when the plate 18 forcibly driven thereinto, thereby to occupy a position beneath uncut portions of said side wall. In Figs. 1 to 5 said plate is provided on. both of its sides with spurs 7), arranged in rows which are extended lengthwise the plate, although they may be otherwise arranged, and on one side only of the plate. Said spurs project outwardly short distances.

In lieu of providing the plate with numerous spurs b, as a securing means, a modified embodiment of my invention is shown in Figs. 6 and 7, wherein 0 represents the metallic plate which is provided on one or both sides with a long rib 0 extended longitudinally, from end to end thereof or thereabout, and made chisel pointed at the ends. Or, in lieu thereof, the plate may have on one or both sides of it one or more short ribs, as represented at (Z, Figs. 8 and 9, formed with flat tops and inclined sides. Or, in lieu thereof, said plate may have formed on one or both sides of it long ribs 6 extended longitudinally from end to end of it at the bottom, said ribs having flat bottoms flush with the bottom of the plate and having inclined tops, as represented in Figs. 10, 11 and 12. This latter form, in addition to cutting its way into the side wall of the kerf when the plate is forcibly driven thereinto, also increases the area of the bottom of the plate, which is an advantage.

lVhen driving the plate of Figs. 1 to 5 into the kerf the spurs I) cut their way and form tracks or ways along the side walls of the kerf, but such tracks or ways will permit of the easy removal of the plate, and as it is designed and intended to arrange the spurs or ribs beneath uncut portions of the side walls, the plate will be driven into the kerf in the block while deposed a little at one side of the block, as shown in Fig. 4:, after which it is forcibly thrust endwis-e a short distance, until the ends thereof are flush with the ends of the blocks or thereabout. When driving the plates of Figs. 6 to 12 into the kerf they will be driven end- Wise, as represented in Fig. 7, instead of transversely and then endwise, as represented in Figs. 1 to 5. In all instances, however, the spurs, projections or ribs are shown, which are adapted to cut their way along the side wall of the kerf, and to occupy posit-ions beneath uncut portions thereof, in view of being equivalents, may be and herein are termed projections.

I claim 1- 1. A paving-block of wood having a kerf extended from end to end of it, intermediate its width, and a metallic plate arranged to bottom in said kerf and to project slightly therefrom, said plate having one or more outwardly extended projections arranged on its sides, and said projections having grooveforming portions, substantially as described.

said plate having one or more projections arranged on its sides at the bottom and extended from end to end of 1t, sald pro ections having grooveform1ng portions and the bottoms of said projections being flush with the bottom of the plate.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses.

JAMES A. COGSWELL.

Witnesses:

B. J. NoYEs, H. B. DAVIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

